I stayed the night at my sister's house. She left early that morning to go to the store. I happened by her and her husband's bedroom on my way to the bathroom and noticed him still in bed pitching a tent. I snuck in to see it up close and gently pulled the sheets back to reveal the biggest cock I've ever seen. I was so horny this morning and practically aching when I saw this cock. I had to have it inside me. Turns out I'm pretty convincing when I wrap my lips around a man's cock. They tend to just let me have my way with them after that.